-A LIVING WORK IN PROGRESS-
Thanks for the comment Azam. You're stuff is looking good. I only really improve when I spend more time on the fundamentals. Perspective and cubes and spheres. Basically the Glenn Vilppu tutorials. Keep it up!
Hey Azam. Thanks for the comments. In answer to your question, it depends on what kind of concept artist you want to be. But really at this point, focus on everything starting with your drawing. The stronger you are at the fundamentals, the easier it'll be to pick up what you want. You rush these and you'll get stuck where a lot of so so concept artists are: good at monsters bad at everything else. Draw both fast and slow. Figures are fast. Sit outside and draw trees very slowly so you're studying how their branches divide. Different trees do it differently. Different lessons from fast sketches and slow life study drawings. Gives you time to think, analyze, study, replicate, not just symbolize and draw as with the kind of life drawings you're doing. Neither's wrong, but both are important. Don't worry about concept art. Worry about art for now.
You structure whore!!! i hate you... wish i could have that solid structure in my drawings